Eric Portis digs into how the browser decides which image to downloads when you give it <img srcset="" sizes"">. Notably, a browser can do whatever it wants:
…Intentionally un-specified behavior lets browsers provide innovative answers to an open-ended question.
Safari 11.1 shipped a strange-but-very-useful feature: the ability to use a video source in the <img /> tag. The idea is it does the same job as a GIF (silent, autoplaying, repeating), but with big performance gains. How big? “20x …
Eric Portis joins me to dig into the world of responsive images.
We start at the basics. Responsive images are specifically images in HTML and exist because of a desire for better performance. Images are probably the biggest culprit in …
In Part 1 of this series, I provided some background on responsive images, describing how you can add srcset and sizes attributes to an img element to serve appropriately sized image files to users of a website based on the …
In this post we'll look at a brief history of responsive images and why they are so important for performant websites. Then we'll look at how WordPress helps automate that, and ultimately how the whole situation gets a lot better by leveraging Cloudinary.
Perhaps you’ve heard about the WebP image format? And how it’s a pretty good performance win, for the browsers that support it? Well that’s only for Blink-based browsers, at the moment. Estelle Weyl’s article Image Optimization explains the best image …
It’s always nice to see design tooling evolve to accommodate modern needs. Let’s look at an example of that: image exporting. Designers and developers spend loads of time exporting images. The design work often happens in software designed for designing, …
The term “responsive images” has come to mean “responsive images in HTML”, in other words, the srcset and sizes attribute for <img /> and the <picture></picture> element. But how do the capabilities that these things provide map to CSS?…
I’m guilty of using responsive images by taking a high res image and downsizing it a few times kinda randomly and using those as the srcset images. Basically the same “desktop”, “tablet”, “mobile” thinking I can also be guilty of …
Nadav Soferman has written a great post about the common mistakes that can be made when developers attempt to make images responsive:
…Whichever responsive design solution or framework you choose, you still need to generate and deliver multiple versions of
In April 2014 Tim Evko created a WordPress plugin that used the CMS’s capabilities to make using responsive images much easier (just do what you were already doing, reap benefits). He wrote about it here. Later it became the official …
